The choice of conductor type is dictated by the specific requirements and environmental conditions of the project. For overhead transmission lines, conductors must be lightweight to reduce the load on support structures, strong enough to withstand mechanical stress from wind and ice, and highly conductive for efficient power transfer over long distances. Materials like Aluminum Conductor Steel Reinforced (ACSR) are frequently used here, combining the lightness and conductivity of aluminum with the high tensile strength of a steel core.

For underground cable laying, the primary concerns are insulation, durability against moisture and soil conditions, and protection from physical damage. Conductors for underground applications are typically well-insulated and often armored to prevent damage from external factors, ensuring long-term reliability and safety.